As a someone who recently built a chess app with Stockfish (WASM with a fallback to the server, see my profile if interested), just be aware that if your application becomes even moderately successful, a couple dozen users hitting your Stockfish server concurrently is very likely to be slower than running individual Stockfish WASM on the client side unless you significantly beef up your backend.
Nice job~~
As a someone who recently built a chess app with Stockfish (WASM with a fallback to the server, see my profile if interested), just be aware that if your application becomes even moderately successful, a couple dozen users hitting your Stockfish server concurrently is very likely to be slower than running individual Stockfish WASM on the client side unless you significantly beef up your backend.